| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| POMUI4 | Polystichum munitum (Kaulfuss) K. Presl ssp. imbricans (D.C. Eat.) Munz | Polystichum imbricans ssp. imbricans | Dryopteridaceae
|
| POMUN | Polystichum munitum (Kaulfuss) K. Presl ssp. nudatum (D.C. Eat.) Ewan | Polystichum imbricans ssp. imbricans | Dryopteridaceae
|
| POMUI3 | Polystichum munitum (Kaulfuss) K. Presl var. imbricans (D.C. Eat.) Maxon | Polystichum imbricans ssp. imbricans | Dryopteridaceae
|
| POMUI2 | Polystichum munitum (Kaulfuss) K. Presl var. incisoserratum (D.C. Eat.) Underwood | Polystichum munitum | Dryopteridaceae
|
| POMU | Polystichum munitum (Kaulfuss) K. Presl | western swordfern | Dryopteridaceae
|
| POPL3 | Polystichum platyphyllum (Willd.) K. Presl | flatleaf hollyfern | Dryopteridaceae
|
| POPO22 | Polystichum polyblepharum C. Presl | Korean tasselfern | Dryopteridaceae
|
| POPO7 | Polystichum polystichiforme (F�e) Maxon | Antilles hollyfern | Dryopteridaceae
|
| POPO8 | Polystichum �potteri Barrington | | Dryopteridaceae
|
| PORH2 | Polystichum rhizophyllum (Sw.) K. Presl | tailed hollyfern | Dryopteridaceae
|
| POSC5 | Polystichum scopulinum (D.C. Eat.) Maxon | mountain hollyfern | Dryopteridaceae
|
| POSE5 | Polystichum setigerum (K. Presl) K. Presl | Alaska hollyfern | Dryopteridaceae
|
| POTR9 | Polystichum triangulum auct. non (L.) F�e | Polystichum echinatum | Dryopteridaceae
|
| POTS | Polystichum tsus-simense (Hook.) J. Sm. | Tsussima hollyfern | Dryopteridaceae
|
| POLYS | Polystichum Roth | hollyfern | Dryopteridaceae
|
| PONUT | Polytaenia nuttallii DC. var. texana Coult. & Rose | Polytaenia texana | Apiaceae
|
| PONU4 | Polytaenia nuttallii DC. | Nuttall's prairie parsley | Apiaceae
|
| POTE3 | Polytaenia texana (Coult. & Rose) Mathias & Constance | Texas prairie parsley | Apiaceae
|
| POLYT | Polytaenia DC. | hairy moss | Apiaceae
|
| POCA29 | Polytaenium cajenense (Desv.) Benedict | Antrophyum cajenense | Vittariaceae
|
| POFE3 | Polytaenium feei (Schaffn. ex F�e) Maxon | Antrophyum lanceolatum | Vittariaceae
|
| POIN17 | Polytaenium intramarginale (Baker ex Jenman) Proctor | Antrophyum intramarginale | Vittariaceae
|
| POLI2 | Polytaenium lineatum (Sw.) J. Sm. | Antrophyum lineatum | Vittariaceae
|
| POUR | Polytaenium urbanii (Brause) Alain | Antrophyum urbanii | Vittariaceae
|
| POAM12 | Polytrias amaura (B�se ex Miq.) Kuntze | Java grass | Poaceae
|
| POPR7 | Polytrias praemorsa (Nees) Hack. | Polytrias amaura | Poaceae
|
| POLYT3 | Polytrias Hack. | Java grass | Poaceae
|
| POLY3 | Polytrichadelphus lyallii Mitt. | Polytrichum lyallii | Polytrichaceae
|
| POALA2 | Polytrichastrum alpinum (Hedw.) G. L. Sm. var. alpinum | alpine polytrichastrum moss | Polytrichaceae
|
| POALF | Polytrichastrum alpinum (Hedw.) G.L. Sm. var. fragile (Bryhn) Long | fragile polytrichastrum moss | Polytrichaceae
|
| POALS6 | Polytrichastrum alpinum (Hedw.) G. L. Sm. var. septentrionale (Sw.) G. L. Sm. | Polytrichastrum alpinum var. alpinum | Polytrichaceae
|
| POAL24 | Polytrichastrum alpinum (Hedw.) G. L. Sm. | alpine polytrichastrum moss | Polytrichaceae
|
| POFO7 | Polytrichastrum formosum (Hedw.) G. L. Sm. | Polytrichum formosum | Polytrichaceae
|
| POLO19 | Polytrichastrum longisetum (Brid.) G. L. Sm. | Polytrichum longisetum | Polytrichaceae
|
| POLY4 | Polytrichastrum lyallii (Mitt.) G. L. Sm. | Polytrichum lyallii | Polytrichaceae
|
| POOH2 | Polytrichastrum ohioense (Ren. & Card.) G. L. Sm. | Polytrichum ohioense | Polytrichaceae
|
| POPA31 | Polytrichastrum pallidisetum (Funck) G. L. Sm. | Polytrichum pallidisetum | Polytrichaceae
|
| POPA32 | Polytrichastrum papillatum G. L. Sm. | Polytrichum papillatum | Polytrichaceae
|
| POSE17 | Polytrichastrum sexangulare (Brid.) G. L. Sm. | Polytrichum sexangulare | Polytrichaceae
|
| POLYT7 | Polytrichastrum G.L. Sm. | polytrichastrum moss | Polytrichaceae
|
| POAF2 | Polytrichum affine Funck | Polytrichum strictum | Polytrichaceae
|
| POAL21 | Polytrichum algidum Hag. & C. Jens. | Polytrichum swartzii | Polytrichaceae
|
| POAL22 | Polytrichum alpestre Hoppe | Polytrichum strictum | Polytrichaceae
|
| POALB3 | Polytrichum alpinum Hedw. var. brevifolium (R. Br.) C. M�ll. | Polytrichastrum alpinum var. alpinum | Polytrichaceae
|
| POALC5 | Polytrichum alpinum Hedw. var. campanulatum (Hornsch.) C. M�ll. | Polytrichastrum alpinum var. alpinum | Polytrichaceae
|
| POALF3 | Polytrichum alpinum Hedw. var. fragile (Bryhn) Nyh. | Polytrichastrum alpinum var. fragile | Polytrichaceae
|
| POALM2 | Polytrichum alpinum Hedw. var. macounii (Kindb.) Saito | Polytrichastrum alpinum var. alpinum | Polytrichaceae
|
| POALS7 | Polytrichum alpinum Hedw. var. septentrionale (Sw.) Lindb. | Polytrichastrum alpinum var. alpinum | Polytrichaceae
|
| POALS8 | Polytrichum alpinum Hedw. var. sylvaticum (Menz.) Lindb. | Polytrichastrum alpinum var. alpinum | Polytrichaceae
|
| POAL23 | Polytrichum alpinum Hedw. | Polytrichastrum alpinum var. alpinum | Polytrichaceae
|
| POAN22 | Polytrichum anomalum (Milde) Milde | Polytrichum longisetum | Polytrichaceae
|
| POAP6 | Polytrichum apiculatum Kindb. | Polytrichum juniperinum | Polytrichaceae
|
| POAP4 | Polytrichum appalachianum Anderson | Appalachian polytrichum moss | Polytrichaceae
|
| POAR18 | Polytrichum arcticum (Schrad.) Wahlenb. | Polytrichastrum alpinum var. alpinum | Polytrichaceae
|
| POAT7 | Polytrichum attenuatum Menz. ex Brid. | Polytrichum formosum | Polytrichaceae
|
| POAU11 | Polytrichum aurantiacum Hoppe ex Brid. | Polytrichum longisetum | Polytrichaceae
|
| POCA48 | Polytrichum capillare Michx. | Pogonatum dentatum | Polytrichaceae
|
| POCOC5 | Polytrichum commune Hedw. var. commune | polytrichum moss | Polytrichaceae
|
| POCOD3 | Polytrichum commune Hedw. var. diminutum (Hag.) Long | Polytrichum commune var. jensenii | Polytrichaceae
|
| POCOJ | Polytrichum commune Hedw. var. jensenii (Hag.) M�nk. in Warnst. | Jensen's polytrichum moss | Polytrichaceae
|
| POCOM4 | Polytrichum commune Hedw. var. maximoviczii Lindb. | Polytrichum commune var. commune | Polytrichaceae
|
| POCON | Polytrichum commune Hedw. var. nigrescens Warnst. | Polytrichum commune var. commune | Polytrichaceae
|
| POCOP5 | Polytrichum commune Hedw. var. perigoniale (Michx.) Hampe | polytrichum moss | Polytrichaceae
|
| POCOS2 | Polytrichum commune Hedw. var. swartzii (Hartm.) Nyh. | Polytrichum swartzii | Polytrichaceae
|
| POCOU | Polytrichum commune Hedw. var. uliginosum Wallr. | Polytrichum commune var. commune | Polytrichaceae
|
| POCOY | Polytrichum commune Hedw. var. yukonense (Card. & Th�r.) Frye in Grout | Polytrichum commune var. jensenii | Polytrichaceae
|
| POCO38 | Polytrichum commune Hedw. | polytrichum moss | Polytrichaceae
|
| PODE13 | Polytrichum decipiens Limpr. | Polytrichum pallidisetum | Polytrichaceae
|
| POFOA3 | Polytrichum formosum Hedw. var. aurantiacum (Hoppe ex Brid.) Hartm. | Polytrichum longisetum | Polytrichaceae
|
| POFO6 | Polytrichum formosum Hedw. | polytrichum moss | Polytrichaceae
|
| POFR8 | Polytrichum fragile Bryhn | Polytrichastrum alpinum var. fragile | Polytrichaceae
|
| POGRA3 | Polytrichum gracile Bryhn var. anomalum (Milde) Hag. | Polytrichum longisetum | Polytrichaceae
|
| POGR24 | Polytrichum gracile Bryhn | Polytrichum longisetum | Polytrichaceae
|
| POHY70 | Polytrichum hyperboreum R. Br. | polytrichum moss | Polytrichaceae
|
| POJE | Polytrichum jensenii Hag. | Polytrichum commune var. jensenii | Polytrichaceae
|
| POJUA2 | Polytrichum juniperinum Hedw. var. affine (Funck) Brid. | Polytrichum strictum | Polytrichaceae
|
| POJUA3 | Polytrichum juniperinum Hedw. var. arcticum Kuc | Polytrichum hyperboreum | Polytrichaceae
|
| POJUG | Polytrichum juniperinum Hedw. var. gracilius Wahlenb. | Polytrichum strictum | Polytrichaceae
|
| POJUW | Polytrichum juniperinum Hedw. var. waghornei Kindb. in Mac. | Polytrichum juniperinum | Polytrichaceae
|
| POJU70 | Polytrichum juniperinum Hedw. | juniper polytrichum moss | Polytrichaceae
|
| POLOA | Polytrichum longisetum Brid. var. anomalum (Milde) Hag. | Polytrichum longisetum | Polytrichaceae
|
| POLOA2 | Polytrichum longisetum Brid. var. aurantiacum (Hoppe ex Brid.) | Polytrichum longisetum | Polytrichaceae
|
| POLO18 | Polytrichum longisetum Brid. | polytrichum moss | Polytrichaceae
|
| POLY2 | Polytrichum lyallii (Mitt.) Kindb. | Lyall's polytrichum moss | Polytrichaceae
|
| PONOV | Polytrichum norvegicum sensu Frye non Hedw. var. vulcanicum (C. Jens.) Podp. | Polytrichum sphaerothecium | Polytrichaceae
|
| PONO8 | Polytrichum norvegicum Hedw. | Polytrichastrum alpinum var. alpinum | Polytrichaceae
|
| PONO9 | Polytrichum norvegicum sensu Frye non Hedw. | Polytrichum sexangulare | Polytrichaceae
|
| POOH | Polytrichum ohioense Ren. & Card. | Ohio polytrichum moss | Polytrichaceae
|
| POPA29 | Polytrichum pallidisetum Funck | polytrichum moss | Polytrichaceae
|
| POPA30 | Polytrichum papillatum (G.L.Sm.) Anderson et al. | papilla polytrichum moss | Polytrichaceae
|
| POPIH | Polytrichum piliferum Hedw. var. hyperboreum (R. Br.) C. M�ll. | Polytrichum hyperboreum | Polytrichaceae
|
| POPI10 | Polytrichum piliferum Hedw. | polytrichum moss | Polytrichaceae
|
| POSEV | Polytrichum sexangulare Brid. var. vulcanicum C. Jens. | Polytrichum sphaerothecium | Polytrichaceae
|
| POSE16 | Polytrichum sexangulare Brid. | polytrichum moss | Polytrichaceae
|
| POSM4 | Polytrichum smithiae Grout | Polytrichum pallidisetum | Polytrichaceae
|
| POSP13 | Polytrichum sphaerothecium (Besch.) C. M�ll. | polytrichum moss | Polytrichaceae
|
| POST70 | Polytrichum strictum Brid. | polytrichum moss | Polytrichaceae
|
| POSW | Polytrichum swartzii Hartm. | Swartz's polytrichum moss | Polytrichaceae
|
| POXA | Polytrichum xanthopilum sensu Crum & Anderson | Polytrichum appalachianum | Polytrichaceae
|
| POYU3 | Polytrichum yukonense Card. & Th�r. | Polytrichum commune var. jensenii | Polytrichaceae
|
| POLYT5 | Polytrichum Hedw. | polytrichum moss | Polytrichaceae
|